Richard xxkit-son



, R. KITSON.v SCREEN GYLINDE'RJFOR COTTON PIGKERS.

No. 76,926.. Patented Apr-,21, 1368;,

TNI MKERT LWHOGMPHING CQ.. WASHIN @time gisten, idetritt vitftitrt.

"Lentement Ne. 're,92`e,..eoeApri z 21', 186s.

msrotfsnsr': nt controsenso-mossos' horror-Promos dlp gnstig ,nient tt,- izi lsst ttttts ttttt'larmakingf part of Atte smut.

` Be-it known that I, R'IcnAnoKrrsoN, of Lowell, in the county of Itiddlesex-,nndststeof Messschnsette, here zinvented. cortninnewnnd -useful vlimI )roi/ersents in Cylinder-Screens for ottomPickers, of which the folA lowing-ion t'ull, clear, and endet description', refercncelieing had-to ,the nccompsnyingdrnwings, 'making part of this specification', in which-1,

. Figure 1 is n.longitndi na1.verticnl section o f lo'cotten-picker,v having my improvement-nppled theretoo ,Figure 2 "is n sid-e elevation. Y. Figure 3,'a.,plsn or top view', showing one perforated-cylinder, lA', the whole surface of which should be perforated, as shown on e. portion thereof. I y f Figure, d represents n plen and four sectional elevctionsof a smell portionof the perforated screen, very' mnclr enlarged. i t This invention relates-to the cylinder-screens which nre used in mac'liines'for pioning'or'tor opening and cleaning cotton or other` 1ibrons snbstsnce s,nnd has for its object to spresd or diffuse the, blst of- :tirV to e. greater or less extenton the ,surfe'ceot' thes'creenylindc'r, nccording to ,the nature of the'bro'ns sitbstnce under operetion, or the length o f =.t'l1e steplecr libre of s uoh substance or-rnnteriol.

The'rotary beater, 3, trikes the cotton or other fibrous enbstence'from thevfeedfeollc a, nnd throws -it forcibly downward ot'ei` e. series of slotsor other 'openrzorln' thence round and outward, between the top' cover, b,

.nn'd the bottom orincline d, to and against the surfacesv of the screen-cylinders A,wl1ich' rotate sloivly in eppoi site directions, ne, indiceted-byfirrows A strong b'last of air, 'generated nnd blown by the beater, B,or other operating-cylinder,.blows thecotton'trith greet force against the surface of each of the screen-cylinders, The' d irt, dust, and refixse mntt'eror s considernble portion of th'exn, pees, through the perforotions. c, to 'the interior o? esch cylinder, and edrnughtfan or other suitable device, connected with one or'hcth endsof each breit-her cylinder, -drewsfthe instand 'much'of the refuse metter ont from s'nch'c'ylinders, and 'bloris them' oft' to some pincelot "deposit, all, asin the ordinnrycotton-opening machine. I

To prodncethe best results, and to free the cotton frorn dust ond dirt ves much as possible, and' ntfthe-seme time'prevent the cotton froin'psssing through the perforationsisvith the dust and dirt, a peculiar cylindersureoe isheoesssry, end-the length of the staple or bresof the cotton to be operated npon shol'tldfbov takenito oon'f aider-ation. As e general rule, cottonlmnnnfaeturers use euch .s porticulargrede orstple of sottomendw'hejn cotton, of s long or sniedium'length of staple isA need,fthecylindersurfnca should he 'slightly or more 'or less raised between the perforetions," as shotvn at vi?,in tig. 4; butit cotton of e short staple, ora staple below thel I -medinm length, is nsed, then the cylindcbsnrfoce should be more or less .depressed between the perforatione, es.

shown nt S, in iig. 4. In all cases, the perfcrntions should be sinsll, niid very nea'togethcn I generally rn'eke the perforetions about one-eighth of: en, inch in diameter, nud. as near together-"as they' can ho .punched Witheet ljreelking into 'each other-soynbont cne-sixteenth of. en inchnpert.'A z

, hen the long-staple cotton is blown ngainst the soren'fcylinder irliich lxes the surface thereof raised, (es 'shown nt' E, iig. 4,) the tendencyof the e'rrblast is to concentrate at and, pass throgh each perforation, carry ing with it much of the dust and-dirt from the cotton, but the long stopte or fibres of' medium lengthwill lie across the perforntions, but cnnnot'ps'ss through., When the' short or comparatively shortsteplefcotton is blown against thecy'lindcr-ecreen which lis-eth0 surface thereot` between the perforetions depressed, (as shown at S, i

gks) 'the notnrel tendency of the si-:blast is'- to spread or diu'se itself in every direction, spreadingv or dife. fusing thc short fibres o cotton with the nir-blnst, und preventing s'nid short fibres remaining onor in contact with thc'snrfncc of the screen-cylinder a suilicient 'length of time to be drsivn-throngh thegperforotions 'It willA be readily secn and understood that the' cylindrical surfaces of the screen-cylinders A may-be so raised or depressed between the perforations as to clean longor 'ehorbstople cotton, or other brons substances, in a superior manner, ,endmithout ,wasting the fibres. I t

lo sorry-ont this-'invention to the greatest possible -ex'tent of raising or depressing l'tfecylindricsl surface between' the pororotions, the vraised .surfaces maybe' bronght. uplto pointed coneshns shown' in red lines et E',

in g, 4; and if shortstaple cotton viere blonn" on to "a cylinder hdving auch pointed-cone surface, it is believed `that nearly all. such cotton would 4be blown throufghnthe perforations into. the cylinder with tbe dust and dirt,

but wool, or'other siinilar and. long fibres, would lie in bulk on the npicesof the cones while the `dust was drewn onthy the drnght-onthe cylinder; forthe depressione` might lemede` iii/deep conicnl'f form,` asshown in red lines at S', in fig. 4, butit is believed that neither dirt nor short cotton could beI forced through the perforatons of such a. cylinder tofny extent,xa -the blastvof einwonldjrenctagainst the conical sides of such depressions, and 'blow most of the cotton away from the cylinder, instead ot into contact witlrt; I :un of `the opinion that neither of these extremes would prodiice stisfnctory resulte, but n cyiin'dricnl surfac'e,properly'raised er' 'depressedpeven thonghslightly,ldoes.producei'erysetisi'tictoi-yreeults infclenning'cttonand other Afibrous substances. Y, t Y 4 o l The screen portion'fmyimproved cylinderfscreen should be made of very thin material, like thin sheet zinc, or hard-rolled pasteboerd, or `cord-boord, 'sthe friction of the nir-blaster current of air on 'the sides 'of perforation!! made through a thick material or sinbstnncev would very much rctmd the action'of tho current Voi' air in its passage through the perforotoris. l V i f l When the screen is mede of herd-rolled cardboard= then the edges of or uronnd thepcrforntions muy be raised, or tnrned outward. or invierd,4 thereby forniing a. lcylindrical eur-fece, thich is ris'ed 'or depressed (as the y case mybe) between the perforntions; and I find, by winding thin perforated sheet zinc around cylinder-heads',

the windingo bending of such finely-perforated zinehns an effect to raise-the surfaces-between the perforntons snilciently to di'use the air-blast, `and properly clean somo kinds o1'v cotton. By-iling the hard-rolled c'nrdi boord Vfor the cylinder-screened m'enable'd to produce e mnoh cheaper cylinder than by sny other material.

l lHerring folly described my invention, what I claim s new, and desire to secure by `Letters Patent, lis

-` cylinder-surface, which ia'more-or leasV misled .or depressed between the perfor-ations,substantially ns:

shown and described, and for the purpose or purposes specified. l

` RICHARD. KITSON.'

Witnesses: i i

Jomv CRANE, t 413. T. Mme.- 

